FRANKLIN — Police here said they uncovered a large marijuana-growing operation after noticing a distinctive odor wafting from an old brick warehouse.

A police officer making a traffic stop next to the building about 8:30 p.m. on Feb. 22 smelled marijuana, Franklin Police Chief Timothy J. O'Sullivan said Tuesday. The officer traced it to a vent on the building, which sits on the northeast corner of Hurricane Road and Eastview Drive.

Police said they obtained a warrant and searched the building just after midnight the next day.

"We're a little shocked this was happening in our community," O'Sullivan said. "We drive past that building every day."

Police suspect a person who was renting the building is connected to the growing operation. They also believe others were likely involved, but they have no additional suspects, O'Sullivan said. Police declined to release names.

Police do not believe the owner of the property had any involvement, O'Sullivan said.

Anyone with information should call the Franklin Police narcotic tip line at (317) 346-1107.